Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Yu. P. Dormidontov"'
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:917-919
We have studied the complete127I spectra and obtained the values of the quadrupole coupling constants e2Qqzz and the asymmetry parameters η in a series of substituted α-iodothiophenes. Using an additive scheme, we have calculated e2Qqzz and determi
Publikováno v:
ChemInform. 21
Publikováno v:
Chemistry of Heterocyclic Compounds. 23:964-967
The reactions of organomagnesium derivatives of 2-methyl- or 2,3-dimethyl-7-azaindoles and 2,3-dimethylbenz[4,5]- or -[6,7]indoles with diethyl oxalate, and the reactivity of the resulting ethoxalylindoles towards phenylmagnesium bromide, have been e
Publikováno v:
Chemistry of Heterocyclic Compounds. 18:569-572
It was established that 2,5-dibromo-3-R-4-arylthiophenes form organodimagnesium compounds in ether with the “accompaniment” of dibromoethane. It is shown that because of steric hindrance, only 2-ethoxalyl-3-R-4-arylthiophenes are formed in the re
Publikováno v:
Organic Magnetic Resonance. 4:599-606
Br79 NQR frequencies of a number of bromothiophene derivatives have been measured at 77°K. The frequencies correlate with Hammett δ values and this correlation demonstrates the importance of the inductive effect. The influences of more than one sub
Publikováno v:
Chemistry of Heterocyclic Compounds. 7:1101-1104
The degree of thermal stability of magnesium haloalkoxycarbinolates containing thienyl groups and dichloro-, trichloro-, and trifluoromethyl groups was explained. The effect of substituents in the thienyl group on the stability of the magnesium haloa
Publikováno v:
Chemistry of Heterocyclic Compounds. 17:332-334
It was established that the reaction of hexabromo-2,2′-dithienyl with magnesium in the presence of ethyl bromide gives an organodimagnesium derivative, which reacts with oxalic acid esters to give 3,3′,4,4′-tetrabromo-5,5′-dithienyl-diglyoxal
Autor:
I. I. Lapkin, Yu. P. Dormidontov
Publikováno v:
Chemistry of Heterocyclic Compounds. 3:678-680
Investigation of the thermal stability of halogenometalalkoxides obtained by reacting Grignard compounds with esters of oxalic acid and containing an indolyl group, is continued. Despite the aromatic nature of the indolyl radical, the ordinary decomp
Publikováno v:
Chemistry of Heterocyclic Compounds. 4:579-581
The study of the thermal stability of halogen-magnesium alkoxy-carbinolates was continued. The data obtained led to the development of procedures for the synthesis of esters of α-oxo and of α-hydroxy-acids containing the thienyl radical. An intramo
Publikováno v:
ChemInform. 19